AD9858:  1 GSPS Direct Digital Synthesizer

The AD9858 is a direct digital synthesizer (DDS) featuring a 10-bit DAC operating up to 1GSPS. The AD9858 uses advanced DDS technology, coupled with an internal high speed, high performance D/A ...More

Die revisions have improved the performance of the AD9858. These changes are not yet reflected in the datasheet. For details, please see the AD9858 DDS Performance Improvements brochure.

AD9858:  1 GSPS Direct Digital Synthesizer

Product Description

The AD9858 is a direct digital synthesizer (DDS) featuring a 10-bit DAC operating up to 1GSPS. The AD9858 uses advanced DDS technology, coupled with an internal high speed, high performance D/A converter to form a digitally programmable, complete high frequency synthesizer capable of generating a frequency-agile analog output sine wave at up to 400+ MHz. The AD9858 is designed to provide fast frequency hopping and fine tuning resolution (32-bit frequency tuning word). The frequency tuning and control words are loaded into the AD9858 via parallel (8-bit) or serial loading formats. The AD9858 contains an integrated charge pump (CP) and phase frequency detector (PFD) for synthesis applications requiring the combination of a high speed DDS along with phase-locked loop (PLL) functions. An analog mixer is also provided on-chip for applications requiring the combination of a DDS, PLL, and mixer, such as frequency translation loops, tuners, and so on. The AD9858 also features a divide-by-2 on the clock input, allowing the external clock to be as high as 2 GHz.

The AD9858 is specified to operate over the extended industrial temperature range of –40°C to +85°C.

Applications

  • VHF/UHF LO synthesis
  • Tuners
  • Instrumentation
  • Agile clock synthesis
  • Cellular base station hopping synthesizer
  • Radar
  • Sonet/SDH clock synthesis

Data Sheet, Rev. B, 4/07

Features

  • 1 GSPS internal clock speed
  • Up to 2 GHz input clock
    (selectable divide-by-2)
  • Integrated 10-bit D/A converter
  • Phase noise < 145 dBc/Hz @ 1 kHz offset
    Output frequency = 100 MHz (DAC output)
  • 32-bit programmable frequency register
  • Simplified 8-bit parallel and SPI® serial control interface
  • Automatic frequency sweeping capability
  • 4 frequency profiles
  • 3.3 V power supply
  • Power dissipation 2 W typical
  • Integrated programmable charge pump and phase frequency detector with fast lock circuit
  • Isolated charge pump supply up to 5 V

Diagrams

AD9858 Diagram
Functional Block Diagram for AD9858

Specifications

Compliance Range (V) 3.8V
FS Iout (mA nom) 40mA
I Supply total (max) n/a
I/O Interface Parallel,Serial
Master fclk 1000MHz
Nominal Supply (V) Multi(+3.3, +5)
On-Board Comparator No
REFCLK Multiplier No
Resolution (Bits) 10bit

AD9913 - Low Power 250 MSPS 10-Bit DAC 1.8 V CMOS Direct Digital Synthesizer

Subscribe to New Products Feed
Part# Master fclk Resolution (Bits) Tuning Word Width (bits) Nominal Supply (V) I Supply total (max) FS Iout (mA nom) Compliance Range (V) REFCLK Multiplier On-Board Comparator I/O Interface Price* (1000-4999) Product Description
AD9913 250MHz 10 32 Single(+1.8) 63.5mA 4.6 0.8 Yes No Parallel, Serial $9.77 Low power 250 MSPS DDS with 10 bit DAC output
AD9833 25MHz 10 28 Single(+2.3 to +5.5), Single(+2.5), Single(+2.7), Single(+3), Single(+3.3), Single(+3.6), Single(+5) 5.5mA 3 0.65 No No Serial $4.00 25 MHz, Serial Input, Programmable DDS Waveform Generator
AD9831 25MHz 10 32 Single(+3.3), Single(+3.6), Single(+5) 15mA 4 1.5 No No Parallel $6.33 CMOS, 25 MHz Parallel Input DDS with On-Chip 10-Bit DAC & Sine Lookup Table
AD9832 25MHz 10 32 Single(+3.3), Single(+3.6), Single(+5) 15mA 4 1.35 No No Serial $5.06 CMOS, 25 MHz Serial Input DDS with On-Chip 10-Bit DAC & Sine Lookup Table
AD5930 50MHz 10 24 Single(+2.3 to +5.5) 8mA 3.1 0.8 No No Serial $6.38 Programmable Frequency Sweep and Output Burst Waveform Generator
AD5932 50MHz 10 24 Single(+2.3 to +5.5) 8mA n/a n/a Yes No Serial $4.15 Programmable Single-Scan Waveform Generator
AD9830 50MHz 10 32 Single(+5) 60mA 20 1 No No Parallel $11.08 CMOS, 50 MHz Parallel Load DDS with On-Chip 10-Bit DAC & Sine Lookup Table
AD9835 50MHz 10 32 Single(+5) 40mA 4 1.35 No No Serial $5.82 CMOS, Serial Input, 50 MHz DDS with On-Chip 10-Bit DAC
AD9834 75MHz 10 28 Single(+2.3 to +5.5), Single(+2.5), Single(+2.7), Single(+3), Single(+3.3), Single(+3.6), Single(+5) 8.7mA 3 0.8 No Yes Serial $5.01 Low Power, 50 MHz Serial Input DDS With On-Board Comparator
AD9850 125MHz 10 32 Single(+3.3), Single(+5) 96mA 20 1.5 No Yes Parallel, Serial $12.14 CMOS, 125 MHz Serial/Byte-Parallel Input, Complete DDS
AD9851 180MHz 10 32 Single(+3), Single(+3.3), Single(+3.6), Single(+5) 130mA 20 1.5 Yes Yes Parallel, Serial $13.56 180 MHz Complete DDS
AD9852